同盟 どうめい怠業 たいぎょうじゃなかったです
dō meita igyōjanakattadesu

Noun
Desu Copula

The polite, past negative form of 同盟怠業

1. Wasn't negligent in alliance.; Wasn't slacking on the alliance.

Past/Perfective
Negative
Polite
Casual Register